/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package retry
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import (
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"fmt"
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"testing"
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"k8s.io/apimachinery/pkg/api/errors"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/apimachinery/pkg/util/wait"
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)
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func TestRetryOnConflict(t *testing.T) {
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opts := wait.Backoff{Factor: 1.0, Steps: 3}
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conflictErr := errors.NewConflict(schema.GroupResource{Resource: "test"}, "other", nil)
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// never returns
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err := RetryOnConflict(opts, func() error {
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return conflictErr
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})
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if err != conflictErr {
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t.Errorf("unexpected error: %v", err)
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}
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// returns immediately
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i := 0
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err = RetryOnConflict(opts, func() error {
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i++
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return nil
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})
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if err != nil || i != 1 {
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t.Errorf("unexpected error: %v", err)
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}
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// returns immediately on error
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testErr := fmt.Errorf("some other error")
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err = RetryOnConflict(opts, func() error {
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return testErr
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})
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if err != testErr {
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t.Errorf("unexpected error: %v", err)
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}
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// keeps retrying
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i = 0
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err = RetryOnConflict(opts, func() error {
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if i < 2 {
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i++
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return errors.NewConflict(schema.GroupResource{Resource: "test"}, "other", nil)
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}
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return nil
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})
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if err != nil || i != 2 {
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t.Errorf("unexpected error: %v", err)
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}
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}
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